package com.lzx.iteam;

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.lzx.iteam.net.AsynHttpClient;
import com.lzx.iteam.util.ShareUtil;

/**
 * Created by zhangshuai on 15/8/18.
 */
public class MyShareQrCodeActivity extends Activity implements View.OnClickListener{

    private ImageView mShareIv;
    private LinearLayout mLlBack;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.create_qr_layout);
        initView();
        Bitmap bitmap = Create2DCode(AsynHttpClient.HTTP_TEAM_DOWNLOAD);
        mShareIv.setImageBitmap(bitmap);
    }

    public void initView(){
        mShareIv = (ImageView) findViewById(R.id.qr_iv);
        mLlBack = (LinearLayout) findViewById(R.id.qr_ll_back);
        mLlBack.setOnClickListener(this);
    }
    /**
     * 用字符串生成二维码
     * @param str
     * @return
     * @throws WriterException
     */
    public Bitmap Create2DCode(String str)  {
        //生成二维矩阵,编码时指定大小,不要生成了图片以后再进行缩放,这样会模糊导致识别失败
        BitMatrix matrix = null;
        try {
            matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, 260, 260);
            int width = matrix.getWidth();
            int height = matrix.getHeight();
            //二维矩阵转为一维像素数组,也就是一直横着排了
            int[] pixels = new int[width * height];
            for (int y = 0; y < height; y++) {
                for (int x = 0; x < width; x++) {
                    if(matrix.get(x, y)){
                        pixels[y * width + x] = 0xff000000;
                    } else {
                        pixels[y * width + x] = 0xffffffff;
                    }

                }
            }

            Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            //通过像素数组生成bitmap,具体参考api
            bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
            return bitmap;

        } catch (WriterException e) {
            e.printStackTrace();
            return  null;
        }
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.qr_ll_back:
                finish();
                break;
        }
    }
}
